Income Taxes - Operating Loss And Credit Carryforwards (Details) $ in Millions	Dec. 31, 2023 USD ($)
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 2,100.0
Tax credit carryforwards	45.7
Domestic Tax Authority | Expire in 2024 — 2028
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	200.0
Tax credit carryforwards	4.3
Domestic Tax Authority | Expire in 2029 — 2033
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	700.0
Tax credit carryforwards	7.9
Domestic Tax Authority | Expire beginning in 2034
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	800.0
Tax credit carryforwards	33.5
Domestic Tax Authority | Carryforward indefinitely
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	400.0
Tax credit carryforwards	0.0
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,500.0
Tax credit carryforwards	19.1
State and Local Jurisdiction | Expire in 2024 — 2028
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	100.0
Tax credit carryforwards	0.0
State and Local Jurisdiction | Expire in 2029 — 2033
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	600.0
Tax credit carryforwards	0.0
State and Local Jurisdiction | Expire beginning in 2034
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	800.0
Tax credit carryforwards	0.0
State and Local Jurisdiction | Carryforward indefinitely
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	0.0
Tax credit carryforwards	$ 19.1